Home / 120,729.84-181,095.64-45,829.80

Finding the Fourth Proportional to 120,729.84, 181,095.64 and 45,829.80

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Solution

The fourth proportional to 120,729.84, 181,095.64 and 45,829.80 is: 68,745.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,729.84 : 181,095.64 = 45,829.80 : x
  2. Step 2: Convert to fraction form
    120,729.84/181,095.64 = 45,829.80/x
  3. Step 3: Cross multiply
    120,729.84x = 181,095.64 × 45,829.80
  4. Step 4: Simplify right side
    120,729.84x = 8,299,576,962.07
  5. Step 5: Solve for x
    x = 8,299,576,962.07/120,729.84
  6. Step 6: Final answer
    x = 68,745.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.